Browsing Vitenskapelige publikasjoner (IMF) by Title

Now showing items 85-104 of 179

    • Inhomogeneous chiral condensate in the quark-meson model 

      Adhikari, Prabal; Andersen, Jens Oluf; Kneschke, Patrick (Journal article, 2017)
      The two-flavor quark-meson model is used as a low-energy effective model for QCD to study inhomogeneous chiral condensates at finite baryon chemical potential μ B. The parameters of the model are determined by matching the ...

    • Interpolation of weighted extremal functions 

      Rashkovskii, Alexander (Peer reviewed; Journal article, 2021-03)
      An approach to interpolation of compact subsets of Cn, including Brunn–Minkowski type inequalities for the capacities of the interpolating sets, was developed in [8] by means of plurisubharmonic geodesics between relative ...

    • Invariant characterization of Szekeres models with positive cosmological constant 

      McNutt, David Duncan; Coley, Alan; Layden, Nicolas (Peer reviewed; Journal article, 2022-07)
      We present an invariant characterization of black holes in the Szekeres spacetime with positive cosmological constant. In the formation of the black holes, we locate geometric horizons, and show that they coincide with the ...

    • An Invariant Characterization of the Levi-Civita Spacetimes 

      Watson, Cooper; Julius, William; Gorban, Matthew; McNutt, David Duncan; Davis, Eric; Cleaver, Gerald (Peer reviewed; Journal article, 2021-08)
      In the years 1917–1919 Tullio Levi-Civita published a number of papers presenting new solutions to Einstein’s equations. This work, while partially translated, remains largely inaccessible to English speaking researchers. ...

    • Investigation of glitches induced by single-crystal diamond compound refractive lenses based on crystal orientation 

      Zhang, Qiuyuan; Polikarpov, Maxim; Nataliya, Klimova; Larsen, Helge Bøvik; Mathiesen, Ragnvald; Emerich, Hermann; Thorkildsen, Gunnar; Snigireva, Irina; Snigirev, Anatoly (Peer reviewed; Journal article, 2019)
      Single-crystal diamond is considered as an ideal material for compound refractive lenses (usually abbreviated to “CRLs”) mainly due to its stability when bathed in strong X-ray radiation. Since CRLs come into operation by ...

    • Lattice study of static quark-antiquark interactions in dense quark matter 

      Astrakhantsev, Nikita Yu.; Bornyakov, Vitaly G.; Braguta, Victor V.; Ilgenfritz, Ernst-Michael; Kotov, Andrey Yuryevich; Nikolaev, Alexander A.; Rothkopf, Alexander Karl (Peer reviewed; Journal article, 2019-05)
      In this paper we study the interactions among a static quark-antiquark pair in the presence of dense two-color quark matter with lattice simulation. To this end we compute Polyakov line correlation functions and determine ...

    • Learning the nonlinear flux function of a hidden scalar conservation law from data 

      Li, Qing; Evje, Steinar (Peer reviewed; Journal article, 2023-10)
      Nonlinear conservation laws are widely used in fluid mechanics, biology, physics, and chemical engineering. However, deriving such nonlinear conservation laws is a significant and challenging problem. A possible attractive ...

    • Lil3 dimerization and chlorophyll binding in Arabidopsis thaliana 

      Mork-Jansson, Astrid Elisabeth; Gargano, Daniela; Kmiec, Karol; Furnes, Clemens; Shevela, Dmitriy; Eichacker, Lutz (Peer reviewed; Journal article, 2015)
      The two-helix light harvesting like (Lil) protein Lil3 belongs to the family of chlorophyll binding light harvesting proteins of photosynthetic membranes. A function in tetrapyrrol synthesis and stabilization of geranylgeraniol ...

    • Log-density gradient covariance and automatic metric tensors for Riemann manifold Monte Carlo methods 

      Kleppe, Tore Selland (Peer reviewed; Journal article, 2023)
      A metric tensor for Riemann manifold Monte Carlo particularly suited for nonlinear Bayesian hierarchical models is proposed. The metric tensor is built from symmetric positive semidefinite log-density gradient covariance ...

    • Low Z-4OHtam concentrations are associated with adverse clinical outcome among early stage premenopausal breast cancer patients treated with adjuvant tamoxifen 

      Helland, Thomas; Naume, Bjørn; Hustad, Steinar; Bifulco, Ersilia; Kvaløy, Jan Terje; Sætersdal, Anna Barbro; Synnestvedt, Marit; Lende, Tone Hoel; Gilje, Bjørnar; Mjaaland, Ingvil; Weyde, Kjetil; Blix, Egil Støre; Wiedswang, Gro; Borgen, Elin; Hertz, Daniel Louis; Janssen, Emiel; Mellgren, Gunnar; Søiland, Håvard (Peer reviewed; Journal article, 2020)
      Low steady‐state levels of active tamoxifen metabolites have been associated with inferior treatment outcomes. In this retrospective analysis of 406 estrogen receptor‐positive breast cancer (BC) patients receiving adjuvant ...

    • Matching the Nonequilibrium Initial Stage of Heavy Ion Collisions to Hydrodynamics with QCD Kinetic Theory 

      Kurkela, Aleksi; Mazeliauskas, Aleksas; Paquet, Jean-Francois; Schlichting, Sören; Teaney, Derek (Peer reviewed; Journal article, 2019-03)
      High-energy nuclear collisions produce a nonequilibrium plasma of quarks and gluons which thermalizes and exhibits hydrodynamic flow. There are currently no practical frameworks to connect the early particle production in ...

    • Mathematical Analysis of Two Competing Cancer Cell Migration Mechanisms Driven by Interstitial Fluid Flow 

      Evje, Steinar; Winkler, Michael (Peer reviewed; Journal article, 2020-04)
      Recent experimental work has revealed that interstitial fluid flow can mobilize two types of tumor cell migration mechanisms. One is a chemotactic-driven mechanism where chemokine (chemical component) bounded to the ...

    • The missing link in gravitational-wave astronomy: A summary of discoveries waiting in the decihertz range 

      Sedda, Manuel Arca; Berry, Christopher P. L.; Jani, Karan; Amaro-Seoane, Pau; Auclair, Pierre; Baird, Jonathon; Baker, Tessa; Berti, Emanuele; Breivik, Katelyn; Caprini, Chiara; Chen, Xian; Doneva, Daniela; Ezquiaga, Jose M.; Ford, K. E. Saavik; Katz, Michael L.; Kolkowitz, Shimon; McKernan, Barry; Mueller, Guido; Nardini, Germano; Shao, Lijing; Tamanini, Nicola; Warburton, Niels; Witek, Helvi; Wong, Kaze; Zevin, Michael (Peer reviewed; Journal article, 2021-04)
      Since 2015 the gravitational-wave observations of LIGO and Virgo have transformed our understanding of compact-object binaries. In the years to come, ground-based gravitational-wave observatories such as LIGO, Virgo, and ...

    • Multimessenger Constraints for Ultradense Matter 

      Annala, Eemeli; Gorda, Tyler; Katerini, Evangelia; Kurkela, Eero Aleksi; Nättilä, Joonas; Paschalidis, Vasileios; Vuorinen, Aleksi (Peer reviewed; Journal article, 2022)
      Recent rapid progress in neutron-star (NS) observations offers great potential to constrain the properties of strongly interacting matter under the most extreme conditions. In order to fully exploit the current observational ...

    • Multimode Quasinormal Spectrum from a Perturbed Black Hole 

      Capano, Collin D.; Cabero, Miriam; Westerweck, Julian; Abedi, Jahed; Kastha, Shilpa; Nitz, Alexander H.; Wang, Yi-Fan; Nielsen, Alex Bentley; Krishnan, Badri (Peer reviewed; Journal article, 2023)
      When two black holes merge, the late stage of gravitational wave emission is a superposition of exponentially damped sinusoids. According to the black hole no-hair theorem, this ringdown spectrum depends only on the mass ...

    • New benchmarks in the modelling of X-ray atomic form factors 

      Thorkildsen, Gunnar (Peer reviewed; Journal article, 2023)
      Analytical representations of X-ray atomic form factor data have been determined. The original data, f0(s;Z), are reproduced to a high degree of accuracy. The mean absolute errors calculated for all s = sin θ/λ and Z values ...

    • New G2-conifolds in M-theory and their field theory interpretation 

      Svanes, Eirik Eik; Acharya, Bobby S.; Foscolo, Lorenzo; Najjar, Marwan (Peer reviewed; Journal article, 2021)
      A recent theorem of Foscolo-Haskins-Nordström [1] which constructs complete G2-holonomy orbifolds from circle bundles over Calabi-Yau cones can be utilised to construct and investigate a large class of generalisations of ...

    • New tests for trend in time censored recurrent event data 

      Lindqvist, Bo Henry; Kvaløy, Jan Terje (Peer reviewed; Journal article, 2024-01)
      We consider testing for trend in recurrent event data. More precisely, for such data we consider testing of the null hypothesis of data coming from a renewal process. The new tests are essentially obtained by considering ...

    • New tests for trend in time censored recurrent event data 

      Lindqvist, Bo Henry; Kvaløy, Jan Terje (Peer reviewed; Journal article, 2024)
      We consider testing for trend in recurrent event data. More precisely, for such data we consider testing of the null hypothesis of data coming from a renewal process. The new tests are essentially obtained by considering ...

    • A new variational discretization technique for initial value problems bypassing governing equations 

      Rothkopf, Alexander Karl; Nordström, Jan (Peer reviewed; Journal article, 2023-03)
      Motivated by the fact that both the classical and quantum description of nature rest on causality and a variational principle, we develop a novel and highly versatile discretization prescription for classical initial value ...